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    FETAL PULSE OXIMETRIC DEVICE
    1.
    发明专利
    FETAL PULSE OXIMETRIC DEVICE 失效

    公开(公告)号：JP2000312672A

    公开(公告)日：2000-11-14

    申请号：JP2000055056

    申请日：2000-02-29

    Applicant: NELLCOR PURITAN BENNETT INC

    Inventor： CHUNG CHRISTOPHER ,  MCNAMARA HELEN M

    IPC: A61B10/00 ,  A61B5/00 ,  A61B5/107 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/1464

    Abstract: PROBLEM TO BE SOLVED: To obtain an intrauterus pulse oximetric device which measures a fetal blood oxygen saturation degree in a section within the adequate region of a fetus. SOLUTION: A sensor 103 is mounted at a rigid cable 101 and can be inserted into the appearance section of the fetus and the uterus beyond the region within the cervix of the uterus. The cable 101 has visual and tactual marks which enable a user to guide the sensor 103 to the adequate section on the fetus without viewing or touching the sensor.

    SENSOR FOR INSIDE OF UTERUS
    2.
    发明专利
    SENSOR FOR INSIDE OF UTERUS 失效

    公开(公告)号：JP2001161666A

    公开(公告)日：2001-06-19

    申请号：JP2000347337

    申请日：2000-11-14

    Applicant: NELLCOR PURITAN BENNETT INC

    Inventor： CHUNG CHRISTOPHER ,  ERIC JOHANSSON ,  RITSON CARL ,  MANNHEIMER PAUL D ,  MCNAMARA HELEN M

    IPC: A61B5/145 ,  A61B5/00 ,  A61B5/1455 ,  A61B5/1464 ,  A61B10/00

    Abstract: PROBLEM TO BE SOLVED: To provide a pulse oximeter whose sensor is put in an unreachable area on an embryo in the uterus suitable for measuring and with which it is possible to confirm that the operating surface of the sensor is firmly put on the embryo's skin. SOLUTION: A monitor 100 of the pulse oximeter is composed of a unit 102 for calculating the degree of saturation of oxygen and a contact display unit 104 equipped with a contact indicator 118. A sensor 200 is composed of a unit 204 for a contact signal and a light signal unit 202 for. The unit for the contact signal has a pair of electrodes 210 and 212 connected through buses 208, 209 to a current generator 106. A voltage value between these electrodes in an amniotic fluid 215 is measured with a unit 108 for measuring voltage. A comparator 112 judges a contact by comparing the above measured value with a threshold value T. The unit for calculating the degree of saturation of oxygen calculates the embryo's of saturation of oxygen in the blood based on a light pulse datum obtained through a bus 206.

    SCROLL COMPRESSOR
    3.
    发明专利
    SCROLL COMPRESSOR 失效

    公开(公告)号：JPH1082384A

    公开(公告)日：1998-03-31

    申请号：JP28286796

    申请日：1996-10-07

    Applicant: NELLCOR PURITAN BENNETT INC ,  AIR SQUARED INC

    Inventor： SHAFFER ROBERT ,  ADRIANCE KYLE ,  KIMBRO CHARLES DAVID

    IPC: F04C29/04 ,  F01C17/06 ,  F04C18/02

    Abstract: PROBLEM TO BE SOLVED: To provide a scroll compressor of high performance having a rib to easily and speedily dissipate heat generated while driving the compressor. SOLUTION: Involutes 79, 81 extending in the inside of a revolving side scroll 71 and a fixed side scroll 73 are maintained in a state their phases are slipped by 180 deg. each other, make contact with each other at a partial position and subdivide a fluid space. The involutes are made in dimensions and shapes to extend to a position to approach the opposite scroll, supported by each of the scrolls and have tip to partition an involute tip groove. Compliant seal is received in these involute tip groove, and seals so as not to make a clearance or a 'blowhole' between one of the involutes and a bottom part of the scroll opposite to this involute.

    Blind source separation of pulse oximetry signals
    4.
    发明申请
    Blind source separation of pulse oximetry signals 有权
    盲源分离脉搏血氧饱和度信号

    公开(公告)号：US20040059210A1

    公开(公告)日：2004-03-25

    申请号：US10674709

    申请日：2003-09-29

    Applicant: Nellcor Puritan Bennett Inc.

    Inventor： Paul F. Stetson

    IPC: A61B005/00

    CPC classification number: A61B5/14551 ,  A61B5/02416 ,  A61B5/7207 ,  A61B5/7239

    Abstract: A method and apparatus for the application of Blind Source Separation (BSS), specifically independent Component Analysis (ICA) to mixture signals obtained by a pulse oximeter sensor. In pulse oximetry, the signals measured at different wavelengths represent the mixture signals, while the plethysmographic signal, motion artifact, respiratory artifact and instrumental noise represent the source components. The BSS is carried out by a two-step method including an ICA. In the first step, the method uses Principal Component Analysis (PCA) as a preprocessing step, and the Principal Components are then used to derive sat and the Independent Components, where the Independent Components are determined in a second step. In one embodiment, the independent components are obtained by high-order decorrelation of the principal components, achieved by maximizing the sum of the squares of the higher-order cumulants of the plurality of mixture signals.

    Abstract translation: 用于将盲源分离（BSS）应用于特定独立分量分析（ICA）的方法和装置，用于由脉搏血氧计传感器获得的混合信号。 在脉搏血氧饱和度测量中，以不同波长测量的信号代表混合信号，而体积描记信号，运动假象，呼吸假象和仪器噪声则代表源分量。 BSS通过包括ICA的两步法进行。 在第一步中，该方法使用主成分分析（PCA）作为预处理步骤，然后使用主成分导出sat和独立组件，其中独立组件在第二步中确定。 在一个实施例中，通过使多个混合信号的高阶累积量的平方和最大化而实现的主要分量的高阶去相关来获得独立分量。

    Oximeter sensor with digital memory recording sensor data
    5.
    发明申请
    Oximeter sensor with digital memory recording sensor data 有权

    公开(公告)号：US20030195402A1

    公开(公告)日：2003-10-16

    申请号：US10440560

    申请日：2003-05-16

    Applicant: Nellcor Puritan Bennett Inc.

    Inventor： Michael E. Fein ,  Paul D. Mannheimer ,  Adnan Merchant ,  Charles Porges ,  David Swedlow ,  Marcia Fein

    IPC: A61B005/00

    CPC classification number: G01D18/00 ,  A61B5/14552 ,  A61B5/1495 ,  A61B2562/085

    Abstract: The present invention provides a memory chip for use in an oximeter sensor, or an associated adapter or connector circuit. The memory chip allows the storing of different data to provide enhanced capabilities for the oximeter sensor. In addition to providing unique data to store in such a memory, the invention describes unique uses of data stored in such a memory. The data stored in the memory chip may include information relating to use of the oximeter sensor. For example, the memory chip may encode a sensor model identification that can be displayed on a display screen when the sensor is connected to an oximeter monitor. The memory may also encode a range of operating parameters such as light levels over which the sensor can function or a maximum drive current. The operating parameters are read and interpreted by a controller circuit to control the pulse oximetry system.

    Selection of preset filter parameters based on signal quality
    9.
    发明申请
    Selection of preset filter parameters based on signal quality 有权
    基于信号质量选择预设滤​​波器参数

    公开(公告)号：US20040138538A1

    公开(公告)日：2004-07-15

    申请号：US10341722

    申请日：2003-01-13

    Applicant: Nellcor Puritan Bennett Inc.

    Inventor： Paul F. Stetson

    IPC: A61B005/00

    CPC classification number: A61B5/14551 ,  A61B5/01 ,  A61B5/021 ,  A61B5/02416 ,  A61B5/14552 ,  A61B5/7203 ,  A61B5/7221 ,  A61B5/7239 ,  A61B5/725 ,  G06K9/00503

    Abstract: Methods and devices for reducing noise effects in a system for measuring a physiological parameter, including receiving an input signal; obtaining an assessment of the signal quality of the input signal; selecting coefficients for a digital filter using the assessment of signal quality; and filtering the input signal using the digital filter, without comparing the filter's output signal with the input signal.

    Abstract translation: 用于减少用于测量生理参数的系统中的噪声影响的方法和装置，包括接收输入信号; 获得对输入信号的信号质量的评估; 使用信号质量评估来选择数字滤波器的系数; 并使用数字滤波器对输入信号进行滤波，而不将滤波器的输出信号与输入信号进行比较。

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